Home / 2,850.21-4,276-1,389.03

Finding the Fourth Proportional to 2,850.21, 4,276 and 1,389.03

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Solution

The fourth proportional to 2,850.21, 4,276 and 1,389.03 is: 2,083.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.21 : 4,276 = 1,389.03 : x
  2. Step 2: Convert to fraction form
    2,850.21/4,276 = 1,389.03/x
  3. Step 3: Cross multiply
    2,850.21x = 4,276 × 1,389.03
  4. Step 4: Simplify right side
    2,850.21x = 5,939,492.28
  5. Step 5: Solve for x
    x = 5,939,492.28/2,850.21
  6. Step 6: Final answer
    x = 2,083.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.